Free images results:

Asleep pictures, stock photos and images


Little Teddy Stock Photography
Author: Ng
Seal 4 Royalty Free Stock Photos
Author: Rsharood
Turtle 4 Stock Images
Author: Rsharood

Also, here are some commercial RF-licensed images that match your search criteria:  
Asleep Stock Images
Author: Vukvuk

Explore more commercial options: More Asleep Stock Illustrations & Vectors | More Asleep Stock Video Footage